Improvement in paper-making- machines



Sti-nit JAMES VINEY,. OF MANCHESTER, NEW HAMPSHIRE. Letters Patent No.84,235.'da,ted Novemberl 17, 1868.

IMPROVEMENT IN PAPER-MAKING MACHINES.

The Schedule' referred to in these Letters Patent and making part of thesame.

To all whom it may concern Be it'knownv that I, JAMES VINEY, ofManchester,

in the county of Hillsborough, and State Aof New Hamp use the same,reference being had to the accompanying drawings, forming part of thisspecification.

This invention relates to an attachment to machines for manufacturingpaper, whereby the process is greatly facilitated, and much valuabletime is sL ved; and

The invention consists in forming, by steam, water, or

other duid, a vacuum, or a partial vacuum,in boxes, over which the apronwhich contains the lm of paper-pulp passes, on its way to thepressing-rollers, by which vacuum the water or moisture contained insuch paper or pulp is extracted; and also, in the provision made foradjusting the said vacuum-boxes to the width of the paper to be made, aswill be hereinafter more fully described.

Figure l represents an elevation of my vacuum-apparatus, as it appearswhen in use.

Figure 2 is a top or.plan view of the same.

Similar letters of reference indicate-corresponding parts.

A represents the vacuum-boxes, of which there may Vbe any requirednumber.

These boxes are designed to be closed air-tight, with ,theexception' ofapertures in their bottoms,by which 'they are connected with theinterior of the tube B by thev vertical tubes C C.

'Ihese vertical tubes have stop-cocks D D, by which,

communication between the boxes and tube B may be closed.

On the top of these boxes there are sliding covers E, one of whichslides from each end of each box, as seen in the drawing.

Asis seen in the drawing, one of the boxes is closed by the slides E,and one is partially open, to show the aperture F in the bottom, whichcommunicates with the tube B.

G represents the bottoms of the boxes, which extend at each end, as seenat H.

`The wire-cloth beltor apron, which takes up the liquid pulp from thepulp or stock-reservoir, is seen in red line over the boxes A, as whenpassing to the pressing-rollers ofthe machine.

As the pulp is taken from the reservoir, it is, of course, ina wetstate, and the object of my improvement is to extract this water ormoisture from the film of pulp on the 'wire-cloth apron.

f In order vthat the opening inthe' top of the vacuumbox may correspondto the width of the paper, the slides E are adjusted to just suit thatwidth.

The vacuum or partial vacuum is formed in the boxes A by admitting acurrent or jet of steam through the tube I by the ste. m-pipc J.

The current of steam, passing with great velocity through the verticaltube I, withdraws the air from the tube B and the boxes A, and creates avacuum,

more or less perfect, therein.

In other words', the rapid current through the tube I removes theatmospheric pressure, more or less, from the under side of the movingpulp-apron, thus forming the vacuum, and the water or moisture containedin the pulp iows into it, as a natural result.

The pipe K is a water-trap, for receiving and discharging the water soextracted.

lVater, gas, or other fluid or liquid may be used, instead of steam, toproduce this result.

I do not, therefore, confine myself to steam or any other particularsubstance, nor to' the particular arr rangement shown, of pipes, tubes,or boxes, for producing theresult.

I claim as new, and desire to secure by Letters Patentj 1. Extractingthe water or moisture, to a greater or lesser extent, from thepulp onthe wire-cloth or felt apron, on its way to the pressing-rollers, by theremoval of atmospheric pressure, as described, or in any equivalentmanner.

2. The adjustable slides E on the boxes A, by which the aperture in thetop of the box is made to corre spond with the width of the paper,substantially as described.

JAS. VINEY.

Witnesses: i

J. T. MOORE, GHARLEs `luauufaurr,

